CVE-2024-1268: Restaurant POS System RCE Vulnerability

CVE-2024-1268 Overview

A critical unrestricted file upload vulnerability has been identified in CodeAstro Restaurant POS System version 1.0. The vulnerability exists in the update_product.php file, which fails to properly validate uploaded files. This flaw allows remote attackers to upload malicious files without authentication, potentially leading to remote code execution and complete system compromise.

Critical Impact
Remote attackers can exploit this vulnerability to upload arbitrary files, including web shells and malicious scripts, enabling full system compromise without authentication.

Affected Products

CodeAstro Restaurant POS System version 1.0
update_product.php component

Discovery Timeline

2024-02-07 - CVE-2024-1268 published to NVD
2024-11-21 - Last updated in NVD database

Technical Details for CVE-2024-1268

Vulnerability Analysis

This vulnerability is classified as CWE-434 (Unrestricted Upload of File with Dangerous Type). The update_product.php file in the CodeAstro Restaurant POS System lacks proper file type validation mechanisms, allowing attackers to bypass intended restrictions and upload files with executable extensions such as .php, .phtml, or other server-side script formats.

The vulnerability is particularly dangerous because it can be exploited remotely without any prior authentication or user interaction. An attacker can craft a malicious HTTP request to upload a web shell or backdoor directly to the server, gaining persistent access to the underlying system.

Root Cause

The root cause of this vulnerability stems from insufficient input validation in the file upload functionality within update_product.php. The application fails to implement proper security controls including:

Validation of file extensions against an allowlist
MIME type verification of uploaded content
Content-based file type inspection
Restrictions on upload directory execution permissions

Without these safeguards, the application accepts and stores any file type submitted through the product update interface.

Attack Vector

The attack can be initiated remotely over the network. An attacker targets the update_product.php endpoint and submits a crafted multipart form request containing a malicious file disguised or presented as a legitimate product image or document. Once uploaded, the attacker can directly access the malicious file through the web server, triggering code execution with the privileges of the web server process.

The exploitation flow typically follows these steps:

Attacker identifies the vulnerable update_product.php endpoint
A malicious PHP web shell or similar payload is crafted
The file is uploaded through the unprotected endpoint
The attacker accesses the uploaded file via direct URL
Remote code execution is achieved on the target server

For technical details and proof-of-concept information, refer to the VulDB entry #253011.

Detection Methods for CVE-2024-1268

Indicators of Compromise

Unexpected PHP, PHTML, or other executable files appearing in product upload directories
Web server logs showing POST requests to update_product.php with unusual file extensions
Newly created files with obfuscated names or suspicious content in web-accessible directories
Outbound network connections originating from the web server process

Detection Strategies

Implement file integrity monitoring on web application directories to detect unauthorized file creation
Configure web application firewalls (WAF) to inspect multipart form uploads for malicious content
Monitor HTTP request logs for upload attempts with executable file extensions
Deploy endpoint detection and response (EDR) solutions to identify web shell execution patterns

Monitoring Recommendations

Enable detailed logging for the update_product.php endpoint and all file upload activities
Set up alerts for file creation events in product upload directories
Monitor process execution chains from web server processes for suspicious child processes
Review server access logs regularly for reconnaissance and exploitation attempts targeting POS system endpoints

How to Mitigate CVE-2024-1268

Immediate Actions Required

Restrict access to the update_product.php file via web server configuration or remove it if not essential
Implement network-level access controls to limit who can reach the Restaurant POS System
Place the application behind a properly configured web application firewall
Audit existing upload directories for any previously uploaded malicious files

Patch Information

As of the last modification date (2024-11-21), no vendor-provided patch has been publicly documented for this vulnerability. Organizations using CodeAstro Restaurant POS System 1.0 should contact the vendor directly for remediation guidance or consider implementing the workarounds below.

Workarounds

Implement server-side file type validation using allowlists for permitted extensions (e.g., .jpg, .png, .gif)
Add MIME type verification to ensure uploaded content matches the declared file type
Configure the upload directory to be non-executable by the web server
Rename uploaded files using random identifiers and store original names in a database
Consider isolating the POS system from direct internet access using network segmentation

bash

# Apache configuration example to disable script execution in upload directory
<Directory "/var/www/html/pos/uploads">
    Options -Indexes -ExecCGI
    AllowOverride None
    <FilesMatch "\.(php|phtml|php3|php4|php5|phps|cgi|pl|py)$">
        Require all denied
    </FilesMatch>
</Directory>